Individual provider Active NPI

William Ritt, D.O.

  • Surgery Physician
  • Sheboygan, WI
National Provider Identifier
1811283526
Registry record updated Jul 14, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
License
65758-21 Issued in WI
Practice address
3400 Union Ave
Sheboygan, WI 53081-8426
Phone
(920) 828-2700
NPI assigned
Jun 21, 2011
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 14, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X 65758-21 WI Primary

Addresses

Primary practice location

3400 Union Ave
Sheboygan, WI 53081-8426

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other practice location 1

2414 Kohler Memorial Dr
Sheboygan, WI 53081-3129
Phone (920) 457-4461

Other identifiers 2

IdentifierTypeStateIssuer
1811283526MedicaidWI
65758-21OtherWIWI LICENSE

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address writt177652@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20160817000862 WI Practitioner - General Surgery 2062732977 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Practice addresses (Care Compare)

1020 N 12TH St
Milwaukee, WI 53233-1308
Phone (414) 219-3056

2600 Kiley Way
Plymouth, WI 53073-5020
Phone (920) 449-7000

3400 Union Ave
Sheboygan, WI 53081-8426
Phone (920) 828-2530

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy58
Hernia repair (minimally invasive)14
Mastectomy1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10
Melanoma (skin cancer) excision1-10
Removal of tissue1-10
Skin biopsy1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
65758-21WIMDSurgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Aug 1, 2016 Accepting new patients
Aurora Medical Group, Inc. Current Accepting new patients
Aurora Medical Group, Inc. CurrentSince Aug 1, 2016 Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients

Locations

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

3400 Union Ave
Sheboygan, WI 53081
Phone (920) 802-2100

2414 Kohler Memorial Dr
Sheboygan, WI 53081
Phone (920) 457-4461

Interoperability endpoints

  • Direct secure messaging: writt177652@direct.myadvocateaurora.org

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1308614400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1811283526",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3400 UNION AVE",
            "city": "SHEBOYGAN",
            "state": "WI",
            "postal_code": "530818426",
            "telephone_number": "920-828-2700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2414 Kohler Memorial Dr",
            "address_purpose": "LOCATION",
            "city": "Sheboygan",
            "state": "WI",
            "postal_code": "530813129",
            "country_code": "US",
            "telephone_number": "920-457-4461",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RITT",
        "first_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2011-06-21",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "WI",
            "license": "65758-21",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1811283526",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "WI LICENSE",
            "identifier": "65758-21",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "writt177652@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2414 Kohler Memorial Dr",
            "city": "Sheboygan",
            "state": "WI",
            "country_code": "US",
            "postal_code": "530813129",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "2414 Kohler Memorial Dr",
            "city": "Sheboygan",
            "state": "WI",
            "country_code": "US",
            "postal_code": "530813129",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Sheboygan, WI

Sources for this page

Verify at the official NPI Registry.